<?php
var_dump($_REQUEST);
?>



<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title></title>
    </head>
    <body>
    <br>
    你输入的用户名是:<?php echo $_REQUEST['username'] ?><br>
    你输入的密码是：<?php echo $_REQUEST['password'] ?><br>
    </body>
</html>